package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
public class UserServiceImpl implements UserService {


    //微信服务接口地址
    public static final String WX_LOGIN = "https://api.weixin.qq.com/sns/jscode2session";

    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;

    /**
     * 微信登录
     *
     * @param
     * @return
     */
    public User login(UserLoginDTO dto) {
        //1、调用微信登录的接口，获取openid
        HashMap<String, String> map = new HashMap<>();
        map.put("appid", weChatProperties.getAppid());
        map.put("secret", weChatProperties.getSecret());
        map.put("js_code", dto.getCode());
        map.put("grant_type", "authorization_code");
        //获取返回值
        String jsonResult = HttpClientUtil.doGet("https://api.weixin.qq.com/sns/jscode2session", map);
        //解析返回值
        JSONObject jsonObject = JSON.parseObject(jsonResult);
        String openid = jsonObject.getString("openid");


//2、判断openid是不是空
        if (null == openid) {
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
//2、根据openid查询user
        User user = userMapper.getByOpenid(openid);
        if (user == null) {
            //3、新增user
            User user1 = new User();
            user1.setOpenid(openid);
            user1.setCreateTime(LocalDateTime.now());
            userMapper.insert(user1);
            return user1;
        }
        return user;
    }
}

